Two men in Michigan shot at each other in a road rage fueled gun battle witnesses say when robber got upset the other respond to closely so he pulled into a parking lot. And that's when the second car followed and that is when angry words. Turn into deadly actions. A confrontation took place outside the vehicle. And handguns were eventually drawn and shots were exchanged -- both of the Celtics held valid concealed pistol -- Both men were shot and killed police announcing who fired the first shot but witnesses say the driver -- was tailgating. Fired first.

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